Journal
POLAR BIOLOGY
Volume 32, Issue 1, Pages 47-51Publisher
SPRINGER
DOI: 10.1007/s00300-008-0501-5
Keywords
Osthimosia; Cheilostome bryozoan; Sexual dimorphism; New species; Antarctica
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Funding
- Consejo Nacional de Investigaciones Cienti ficas y Te cnicas (CONICET, Argentina)
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Osthimosia chaotica sp. nov., a new celleporid cheilostome bryozoan, is described from samples collected in the South Shetland Isles and the Antarctic Peninsula. It differs from other Antarctic and Subantarctic species of the genus Osthimosia in the absence of vicarious avicularia, the characteristic development of its peristome and the reduced size of the primary orifice of the ovicelled zooids compared to those of autozooids. The occurrence of sexual polymorphism in the Bryozoa is discussed. The new species lives on laminar and filamentous algae.
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